[jab0106]

got a powerhead i need to get into to check out the cylinders and the head screws are bad. a fam member has tried removing them and rung a couple off in the attempt. any suggestions of how to get the cylinder head off the block if the head screws are no count?

 

[sundrop]

all you can do is very patiently heat the bolts thoroughly with a propane plumbers torch. It cant get hot enough to hurt the aluminum so you can just keep heating. I have cooked one bolt 20min straight to get it hot enough to turn the corrosion to "liquid" and allow the threads to move. Sometimes even that isn't enough. I have an engine now that has several broken even after trying every trick in the book.

 

[Brenardo]

Sundrop is spot on. Sometimes bolts are seemingly impossible to remove til you get em hot enough.

 

[jab0106]

so what do you do with the broken ones? thanks for the suggestion guys.

 

[Brenardo]

When you take the head off there will/should be enough to grab with a set of vice grips. Heat them broken bolts up and gently try to back them out.

If they break again get ready for the real trouble. Drill and tap.

 

[ChltBnks]

Left hand tap.

 

[jab0106]

10-4 thanks. will see what happens.